Chevy Tahoe Automatic Transmission Governors, Modulators, Parts

If your Chevy Tahoe is equipped with an automatic transmission, you have come to the right place. In general, the shifting gear process in the automatic transmission depends on the current speed and the engine load level. The latter depends on the current position of the accelerator pedal. The hydraulic control system selects and shifts the necessary gear. This system includes a governor and a modulator to control the transmission. The governor is installed on the transmission output shaft, so governor pressure increases with the speed of your vehicle. The modulator (or vacuum modulator) uses the exhaustion effect, which appears inside the intake manifold, and controls the transmission fluid pressure level on the throttle valve.

Transmission gears inside the planetary gear unit are shifted thanks to operation of the shift valves. Governor pressure and throttle valve pressure are applied from different ends of these shift valves. In such a way, Chevy Tahoe automatic transmission governors, modulators and components are involved in proper transmission operation, so their good condition is of great importance. They have to be replaced if necessary, like some other components, for example, the mechanical speedo plug kit, which you can easily find on our website.